HEPD test @ BTF and Trento Facility Calorimeter preliminary results Beatrice Panico Giuseppe Osteria Francesco Perfetto Valentina Scotti INFN Napoli

HEPD accelerator test HEPD QM Electrons Frascati BTF (25 April- 01 May 2016) Energy range 30 Mev – 150 MeV HEPD FM Frascati BTF (3-5 October 2016) Energy range 30 Mev – 120 MeV Protons Trento facility (8-12 November 2016) Energy range 37 MeV – 228 MeV

Electrons Test @ BTF QM & FM Setup HEPD has been placed on a movable platform. HEPD connected to EGSE which manages the main Power (29.5 V), the CANBUS and RS422 communications. The EGSE and the platform are both remotely controlled from the Control Room. All the measurements have been done with the beam perpendicular to the HEPD window except for 2 positions

Test @ BTF: configurations The HEPD has been tested with electrons beam of different energies and incident position. The Beam Energies used for tests are: 150 – 120 – 90 – 60 – 45 - 30 MeV. The tests have been performed at different incident beam positions Window Silicon ladder Trigger Counters Calorimeter Veto Runs taken with: different trigger masks different veto settings Hot and Cold chains different PMT thresholds

Electrons 30 MeV Side A + Side B Pedestals subtracted Trigger paddle T5 ADC distribution Side A + Side B Pedestals subtracted 1st Calorimeter pad P1

Electrons 30 MeV Total charge measured in the Calo (∑i Pi) 1 e-

Electrons 30 MeV Total charge measured in the Calo (∑i Pi) 2 e-

Electrons 30 MeV Total charge measured in the Calo (∑i Pi) 3 e-

30 MeV - Total charge measured vs. number of hit Calo counters Electrons 30 MeV 30 MeV - Total charge measured vs. number of hit Calo counters Number of hit plane of th calorimeter

Electrons 30 MeV Total charge measured in the Calo for different impact point of the beam

Electrons 45 - 120 MeV 45 MeV Sigma/peak 60 MeV 0.07 Sigma/peak 0.11 0.10 90 MeV Sigma/peak 0.10

Electrons 45 - 120 MeV Energy resolution

Simulated data Electrons 80 MeV Electrons 100 MeV

Electrons 30 – 120 MeV Energy loss in the Calo Event selection: No Lateral Veto Hit No Bottom Veto Hit More than 12 crossed planes

Electrons 30 – 120 MeV Energy loss in the Lyso Event selection: No Lateral Veto Hit No Bottom Veto Hit More than 12 crossed planes Counts are normalized to LYSO central counts

Electrons 60 – 120 MeV Energy loss in the Lyso 60 MeV Sigma/peak 0.09 Event selection: No Lateral Veto Hit No Bottom Veto Hit More than 12 crossed planes One electron in the trigger plane Energy loss in the Lyso 60 MeV Sigma/peak 0.09 120 MeV Sigma/peak 0.14 90 MeV Sigma/peak 0.09

Proton Test @ Trento facility FM Setup HEPD has been placed on a movable platform. HEPD connected to EGSE which manages the main Power (29.5 V), the CANBUS and RS422 communications. The EGSE and the platform are both remotely controlled from the Control Room. All the measurements have been done with the beam perpendicular to the HEPD window Beam Energies: 37 – 51 – 70 – 100 – 125 – 154 – 174 – 202 – 228 MeV

Protons 51 -174 MeV Number of hit Calo planes

Protons 37 – 100 MeV Energy loss in the Calo 37 MeV Sigma/peak 51 MeV 0.11 51 MeV Sigma/peak 0.09 70 MeV Sigma/peak 0.08 100 MeV Sigma/peak 0.08

Protons 125 – 228 MeV Energy loss in the Calo 125 MeV Sigma/peak 0.07 0.17 228 MeV Sigma/peak 0.08 174 MeV Sigma/peak 0.09

Protons 174 – 228 MeV Energy loss in the LYSO 174 MeV 154 MeV Sigma/peak 0.09 154 MeV Sigma/peak 0.33 228 MeV Sigma/peak 0.05

Electrons and protons Energy loss in the Calo Fully contained protons Not contained protons

Electrons and protons Energy Resolution

Electrons and protons Particle Identification (only Calo) Protons 100 MeV No lateral Veto Hit No Bottom Veto Hit preliminary Electrons 90 MeV No lateral Veto Hit No Bottom Veto Hit

Conclusions HEPD calorimeter is able to measure electrons in the energy range 30-150 Mev with an energy resolution better than 10%. HEPD calorimeter (FM) was able to measure protons in the energy range 37 – 228 MeV with a good linearity and with an energy resolution better than 10% Preliminary results on particle identification (electron/proton)